package test;
import java.util.Scanner;

public class Main1 {

	private static Object choice;
	private static int Index;

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
			int[] arr=new int[5];
			
            try{
			if(choice.equals("arr")){
           		int choice=sc.nextInt();
           		arr[Index]=1;
           	}else if(choice.equals("null")){
				str.length();
           	}else if(choice.equals("cast")){
           		Object o=new String("str");
           		Integer x=(Integer)o;
            }else if(choice.equals("num")){
            	String intNum=sc.next();
            	Integer.parseInt(intNum);
            }else{
            	break;
            }
           	
            }catch(Exception e){
            	System.out.println(e);
            }
            sc.close();
	}

}
